P0462: Fuel Level Sensor 'A' Circuit Low Input
10 vehicles · 6 makes · $120-$1,100 repair
Most Reported On
P0462 is an OBD-II diagnostic trouble code meaning “Fuel Level Sensor 'A' Circuit Low Input.” P0462 indicates the powertrain control module detected a fuel-level sensor signal voltage that is lower than the normal operating range — often interpreted as an empty or near-empty reading that may not reflect the actual fuel amount. The fuel level sender reports tank level via a variable resistance, and an abnormally low signal can stem from a short to ground or a failed sender. This usually shows up as a stuck-low or inaccurate fuel gauge rather than a driving problem. It is low-urgency but should be corrected so the gauge and EVAP monitors work properly. This code is most commonly reported on 2007-2014 GMC Sierra 3500HD, 2007-2022 Jeep Wrangler (Sport, Sahara, Rubicon, Unlimited), and 2003-2007 GMC Sierra 1500, plus 7 other vehicles, with repair costs ranging from $120 to $1,100.
Common Causes
Typical Repair Cost
Based on 10 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0462, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected (10)
Fuel Level Sender Failure — Inaccurate/Stuck Fuel Gauge (P0463)
In-Tank Fuel Pump Module Failure and Fuel-Level Sending Unit Fault (No-Start / Erratic Gauge)
Fuel Level Sending Unit Failure / Inaccurate or Frozen Fuel Gauge
FAQ
What does P0462 mean?
P0462 stands for "Fuel Level Sensor 'A' Circuit Low Input." P0462 indicates the powertrain control module detected a fuel-level sensor signal voltage that is lower than the normal operating range — often interpreted as an empty or near-empty reading that may not reflect the actual fuel amount. The fuel level sender reports tank level via a variable resistance, and an abnormally low signal can stem from a short to ground or a failed sender. This usually shows up as a stuck-low or inaccurate fuel gauge rather than a driving problem. It is low-urgency but should be corrected so the gauge and EVAP monitors work properly.
What are the most common causes of P0462?
The most common causes of P0462 are: Faulty fuel level sensor / sending unit, Short to ground in the signal wire, Corroded or damaged connector at the fuel pump module, Open or high-resistance ground circuit, Worn sender resistor card or float, Damaged wiring harness to the tank, Instrument cluster or PCM fault (less common). The specific cause varies by vehicle.
How much does it cost to fix P0462?
Repair costs for P0462 range from $120 to $1,100, depending on the vehicle and root cause.
Which vehicles are affected by P0462?
Au7o has documented P0462 across 10 vehicle models from 6 manufacturers: Chevrolet, GMC, Hyundai, Infiniti, Jeep, Ram.
Sources (12)
- ForumFuel Level Sensor Error — JLWranglerForums.com
- ForumFuel gauge not reading correctly — JK-Forum.com
- NHTSANHTSA complaints involving inaccurate fuel gauge readings on Infiniti M35
- NHTSANHTSA complaints for Infiniti FX35 inaccurate fuel gauge readings
- articleFuel Level Sensor Failure: Chevrolet Silverado 1500 - RepairPal
- ForumFuel Level Sensor Issue - GM-Trucks.com
- ForumWARNING Fuel Tank Pump Failure - Jeep Garage
- ForumFuel Gauge Problem! - Cherokee Forum
- articleP0463 on Dodge Ram 1500: Fuel Level Sensor Failure Causes and Fixes - Go-Parts
- ForumDodge Ram Fuel Gauge Issues: stuck/inaccurate gas gauge Q&A - JustAnswer
- ForumHyundai Elantra fuel pump / fuel sender owner reports
- NHTSANHTSA complaints search - 2002 Hyundai Elantra fuel system complaints
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.